Synthesis of Side Chain Substituted 3-Butylisocoumarins and Absolute Configurations of Natural Isocoumarins from <Emphasis Type="Italic">Artemisia dracunculus</Emphasis>期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Synthesis of Side Chain Substituted 3-Butylisocoumarins and Absolute Configurations of Natural Isocoumarins from Artemisia dracunculus

Authors:	Gerda?Lutz-Kutschera,Doris?Engelmeier,Franz?Hadacek,Andreas?Werner,Harald?Greger,Otmar?Hofer mailto:otmar.hofer@univie.ac.at" title=" otmar.hofer@univie.ac.at" itemprop=" email" data-track=" click" data-track-action=" Email author" data-track-label=" " >Email author

Affiliation:	(1) Institute of Organic Chemistry, University of Vienna, Wien, Austria, AU;(2) Comparative Phytochemistry Department, Institute of Botany, University of Vienna, Wien, Austria, AT

Abstract:	Summary. A series of 3-hydroxy- and 3-bromobutyl-substituted isocoumarins was synthesized. The absolute configurations of three isocoumarin derivatives from Artemisia dracunculus, namely (–)-epoxyartemidin, (–)-2-methoxydihydroartemidin, and (+)-3-hydroxyartemidin were determined by chemical means via derivatization, kinetic racemate resolution (Horeau method), and comparison of the circular dichroism (CD) spectra.DeceasedReceived March 17, 2003; accepted March 19, 2003Published online August 18, 2003

Keywords:	. Epoxyartemidin 2 /content/f30cyn0cyx13jv6k/xxlarge8242.gif" alt=" prime" align=" BASELINE" BORDER=" 0" >-Methoxydihydroartemidin 3 /content/f30cyn0cyx13jv6k/xxlarge8242.gif" alt=" prime" align=" BASELINE" BORDER=" 0" >-Hydroxyartemidin Circular dichroism Chiral resolution Horeau method.
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